Is this a good way to release memory?

I have been programming on iPhone for quite sometime and have had bad experiences with memory management. I was wondering if the following way is a good way to release memory.

int count = [someObject retainCount];

for (int i = 0; i < count; i ++) 
{
[someObject release];
}

This method was an act of desperation in a few situations (particularly UIWebViews) I had faced. The variable's retainCount is reduced to zero which will release the memory being used by it. The method is a little dirty but are there any bottlenecks associated with it?