Actually another startup patient/kind enough to talk to me (:D) is in a very similar predicament to yours. They are infact building a CMS by aggregating severa

Actually another startup patient/kind enough to talk to me (:D) is in a very similar predicament to yours. They are infact building a CMS by aggregating several open source tools (eg word-press and so on). Their main reason for open-sourcing their CMS itself was so the increased scrutiny. However the main concern is how reproducible is your idea? If you are still at the very young stage, and your main strength really is in your IP. But having said that, if your customer base is such that they would be happy to fix problems themselves given the source, that could save you a lot in support-mullah. But that may depend on the kind of license you release your source code under. What do you folks think? or am I thinking about it the wrong way?