One of my coworkers has a degree in linguistics and this idea comes from talking with her about language and isolation. Call it my you should really go to that conference rant if you like. The topic of conversation give me a stark realization that I think anyone that is responsible for the care an feeding of programmers should be cautious of.
Naturally, computer programmers use programming languages and the more complex the language and free form it is the more likely it is to have dialect, idiom, and isogloss just like natural languages.
In particular if a speaker or group of speakers live in isolation long enough they will develop their own little quirky habits. These quirks start off as innocent inside jokes which include conventions that we recognize in API. Given time the isolated group can start to invent new idioms which approach an unintelligible complexity to an outsider. The divisions between various frameworks that share Java as a base language and their definitions of terms is a good example.
So how do you break this cycle of main languages fragmenting and breaking up into new languages? You go out and regularly talk to others about your code, your architecture, and you get a feel for how others say words or convey meanings. You make your community of language larger. Every company needs to get its programmers out there and talking to other developers. One of the best ways is through conferences.
The benefits will be that your corporate architecture will stay closer to the wider world's interpretation of the language and idioms you use (think: style, practice, and API). Your developer's will be more creative and valuable as they benefit from the exchange of ideas. And you will know that you have a pool of similarly talented consultants and developers to seek out when you need them.
Other good ways to let your programmers get out there and learn more is to encourage the use of social networking in responsible and applicable ways. I used this recently to help think about const versus final in our code base.
Another idea I've been toying with is to have at least one small company backed Open Source project that your people are encouraged to contribute to that you can also use for getting outside feedback and perhaps to recruit new people into your company from. This is a novel idea but I think with some sensible boundaries it can pay off even for closed source companies.
Those are just some of my thoughts on the topic. But essentially you want to avoid putting your programmers in the position that all they ever do is "talk" (via programming) to the computer and themselves. You need to talk with other people whether in code or English to keep your skills sharp and to avoid drifting off into your own strange dialect. The dangers to both the company and the employee of drifting off into your own little world are profound. It can mean obsolescence for both parties and that doesn't help anyone ... except maybe your competitors.