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I have owned this Store 'n' Go 2gb Memory Stick for only a couple of years now, robbed it off my dad after my little free 64mb one got too full and I had coursework deadlines looming. It's relatively small, a nice solid black in color, a nice button on the top so the metal USB connector slots easily inside so you don't accidentally bend or break it off. Mine is actually bent from the number of times I've not checked the USB ports before putting my laptop down awkwardly on the bed - but it still works fine, and though it's probably not recommended, it does bend back close to its original shape again.
Priced at around £5 (Amazon, Play.com, PC World, Staples) it really is worth the money. 2gb can hold a lot of documents, whilst still leaving room to spare for the odd game or funny picture (we all know everyone has guilty pleasure on their memory sticks =P). Its size is perfect for anyone, and it can be either be carried in your pocket, purse or handbag or strung to your keys - I never do this with mine just in case something gets into them, but they do offer the choice at least.
I have found it can be large enough to remember it's there, but also small enough to lose - if you do put it in your handbag for example, make sure you know exactly where it is, an extra pocket or something inside. And if you like to leave it in a certain place in the house, don't ever move it from that place unless you're using it or else you will forget where it is! This may just be my forgetful mind working here, but I admit I have lost it a few times only to find it hidden away somewhere.
It is accepted on many PCs and laptops. I've used mine on my laptop, my PC, mum's PCs and laptops, Uni's PCs and laptops, libraries, everywhere, so you can carry it with you even as a 'just in case' without noticing that it's there unlike some large and heavy memory sticks nowadays. It is made out of plastic to keep it protected, but also light in your pocket, and as with all memory sticks the Drivers are embedded into it so it will install itself automatically to any machine once it's plugged in.
It was easy enough to start using. For the very first use, all you have to do is open the packaging, put it into a USB slot, follow the instructions to install the drivers onto the PC and voila, it's done! As with all memory pens, cards and hard drives, it comes with a 'format guarantee' - don't trust this. I once had a memory card die on me because I believed the 'format guarantee', and when I took it back to the shop so someone could have a look it turned out it hadn't been formatted. So just to be safe, format it once or twice.
There will be two or three files already on the memory stick, so if you do format it make sure you copy and paste these and keep a copy somewhere safe. I actually deleted them as soon as I could but it turns out one is an instruction manual on how to set a password on your Stick, something I've decided would be very useful now but I can't get it. So save a copy onto your PC, keep it on your Stick or delete it, it's up to you, but it's very helpful documentation.
Personally I have used my Store 'n' Go for music, pictures, documents, films and videos. With a storage space of 2gb it is easy to fit a heck of a lot of documents and images onto this memory stick without having to worry you'll fill it up too quickly. I don't think mine has ever been full, and I have managed to fit a full film on there before. College and Uni work has been repeatedly saved and deleted off this Stick, and it is still working in perfect condition after 2 or 3 years. Just to be safe I do format it every few months, and in case you are the sort of person to accidentally stand on it because you dropped it or put it down by accident, back your files up on the PC too!