If you have found something that solves a specific problem, there is no reason why you shouldn't share it here. Just ask the question in a meaningful way, and then provide an answer so fantastic that it becomes the source of record.
The StackExcahnge network has no problem with this, and I don't think we should either. Just read the latest blog post yourself. Encyclopedia StackExchange (emphasis mine)
Since Stack Overflow launched, we’ve been trying to explain that
it’s not just a Q&A platform: it’s also a place where you can publish things that you’ve learned: recipes, FAQs, HOWTOs,
walkthroughs, and even bits of product documentation, as long you
format it as a question and answer...
For a long time we’ve been pleading for people to write more canonical
answers so the same questions don’t keep coming up again and again,
and we even have the Self-Learner badge which you can only earn by
answering your own question...
IMHO, just don't make a question like "What tips have you learned?" If you have a couple of tips you want to share because it solves an awesome problem on the phone, just keep it Q/A style.