One way is: 'Collector's Zone' 'Users who use RapidShare for free may place their files in the Collector's Zone. When you upload files into this area, they are automatically allocated to your Collector's Account. If your files are downloaded, you collect RapidPoints that can be exchanged for a free Premium Account.' So then you can use these premium accounts yourself or sell them for money!
Correction: the 'only way' to make money with RS is this method. They have stopped all other payouts and programs. If you intend to share files on RS, it is not to make any money from them. They are also in the process of signing agreements with major media companies, so expect them to continue removing content violating files...
No problem, they used to be the best, lots of downloads but low pay per download.... but now it is zero pay per download. ;-(
alternative to RS? I personally use hotfile without any issue, they at least pay on time every Monday like clockwork.... See this link, start at the last page and work your way back... http://forums.digitalpoint.com/showthread.php?t=1666932&page=1