is there any way to make a flash drive to be extra RAM? I think there are ways with windows but if there is some way with linux i would love to find out how it's done (unless it requires a lot of time and, for whatever strange reason, extra space that i just don't have)
thanks even if there isn't anything, just thought i'd give it a try

swapboost (i don't know if there are any others that are not just being tested right now)

Just for some information what distribution / version of linux are you running?
What are the hardware specs of your computer?
What problems are you currently having if any?
I assume you can not add more RAM to this machine?

Posting the output of the console command free will help. It will show how much swap you currently have and are using also. What applications are you running?

Using USB flash memory for swap will be much much slower then an IDE or SATA drive so I do not see any advantage using it as such. You can add a temp swap file to see of it improves performance. BTW swapboost is just a simple bash script to use your flash drive as additional swap space, nothing magical about it. Flash memory has a limited number of write/erase cycles. Even though the newer drives have wear limiting it will still probably shorten the drives lifespan.

Personally I think this is a bad idea.

The USB flash drive is bottle-necked at the USB port limited by its 480Mbit/s or 60Mb/s. In reality the reading speed is no more than half. The 4Gb flash drive I just bought states its reading and write speeds are 12 and 3.5Mb/s respectively.

My Sata disk reading speed is 80Mb/s. I cloning the hard drive I clocked on average 45 to 55 Mb/s. If the hard disk is an external USB device the speed is about 1/3. Thus an ordinary flash drive is at least 7 times slower than an internal Sata hard disk!