Fine then, give your's, instead of being so bloody opinionated about yourself.
It's pretty clearly part of their "Do what Google does" strategy. First the rapid version releases, and now (as noted in another thread) the pending removal of a easily visible version number. Chrome's Versioning scheme has allowed it to have 13 Major versions in the span of 2 years since initial release. At the moment builds of 14 and 15 are in beta and the dev branch respectively.
Advancing the version number has absolutely nothing to do with "catching up to IE". They are simply trying to, for whatever reason, release "like chrome". What is the reason for Google's Rapid Release schedule for Chrome? They are merely following the "Release Early, Release Often" Mantra. If
their purpose was to "catch-up" to IE, they would have been done with that task nearly 8 versions ago. The problem is, Firefox/Mozilla seems to be losing their direction and focus, and rather than emphasizing the major strength of their browser over the competition, such as the wealth of available add-ons- they are instead adopting the same Rapid-release schedule as Google Chrome, meaning that every 6 weeks a new browser version will supplant the old and obsolete most available add-ons for a time. In tackling the Chrome insurgent by seeking parity with its rapid release schedule, simple extension API, sparser user interface, process-isolated tabs and so forth, Firefox may be losing its strongest reason for existing.
Before it was released that Pro Evolution Soccer was doing the exact same thing with FIFA on PlayStation - releasing versions more often so they would catch up with FIFA.
Pro Evolution Soccer appears to have been first released in 2001, and had a new release every year thereafter. Same with FIFA, but they started in 1996. There was no "Catch-up" that I can see, and I also don't understand how you can see any connection between what is normally a console game that has no version number at all and web browsers that run on a computer.