You either do it for yourself: - So that you have some place to store interesting solutions, things you've learned, notes, et.. - So recruiters / others can f

You either do it for yourself: - So that you have some place to store interesting solutions, things you've learned, notes, et.. - So recruiters / others can find you and offer to hire you. Or you do it for others: - If you spent the last two days bashing your head against a problem and found a good solution, then chances are that there will be others out there looking for the same solution. Just as you found solutions of others useful, this is a way for you to give back to your fellow developers.