Google is currently using the model of try creating a service and see if it sticks with users. If you have ideas for a lot of small web applications, why don't

Google is currently using the model of try creating a service and see if it sticks with users. If you have ideas for a lot of small web applications, why don't you try the really low risk approach of building them one at a time, polishing each one up really well, and host these applications on the web? Internet web hosting is dirt cheap and if these are all "small" applications, then you won't need a lot of resources for any of them. After you build a small collection of services in this way, you can then start looking at cobbling them together into a single service brand like 37signals for example. Alternatively, you may find that one or several of your web properties really take off. You would then be able to let the users tell you how to evolve/grow that service (or system). Good luck.