So you are probably thinking, is all of this hassle really worth it? I can buy a 3TB HDD from Amazon for $234.99 and have all the free space I will ever need! That is true, that is very true. A drive like the Western Digital green drive that I referenced will net a transfer speed of approximately 60-80MB/s (see reviews on Amazon's site). Whereas, you can see in the graphic below just how fast my SSD is (and I actually believe it is in need of a secure erase and reinstall).
Once you have an SSD and are managing the space effectively, there are a few tips that you should follow to better utilize the SSD and improve its performance. Many people that you should disable page files in Windows, especially if you have a decent amount of RAM to where paging really isn't necessary. A friend of mine has 12GB of RAM in his Windows 7 gaming rig, and he turned of page files to save the extra thrashing of the hard drive that occurs.
Speaking of disk writes and rewrites, you should also disable indexing of your hard drive (or Spotlight on the Mac). It is shown that SSDs have a finite number of writes available before the drive will stop working. USB flash drives are similar, and the data on those drives is often saved in such a way that a previous file is not technically re-written until absolutely necessary, distributing the wear of each sector evenly. Constantly indexing the drive for faster search is simply unnecessary with the fast read speeds of an SSD drive.