The statistics shows that, this is a legal form. In many languages as in my native language - Bulgarian - it is possible to ask a question in general form - without personal pronoun. Apparently these are the reasons why 2 of my 4 questions begin with "How to..." :)
+--------------------------------------------------------+ | Stack Exchange | Questions # | How to Q # | How to Q % | +----------------+-------------+------------+------------+ | Unix & Linux | 124,443 | 17,855 | 14.3 % | | Stack Overflow | 14,598,565 | 1,966,679 | 13.5 % | | Ask Ubuntu | 272,812 | 33,412 | 12.2 % | | Server Fault | 249,373 | 22,056 | 8.8 % | | ... | ... | ... | ... | | English Lang.. | 42,561 | 1,581 | 3.7 % | +--------------------------------------------------------+