1. A method of acquiring online meeting data relating to an online meeting, the method comprising: running, by processing circuitry, a set of programs to carry out an online meeting which shares online meeting content among a set of users; while the processing circuitry runs the set of programs to carry out the online meeting, performing a set of information collection operations by the processing circuitry, the set of information collection operations collecting online meeting data from the set of programs, the collected online meeting data including non-bitmap text-based information extracted from the set of programs; and storing, by the processing circuitry, the collected online meeting data in a designated location of computer memory; wherein performing the set of information collection operations includes: identifying keywords and phrases in the non-bitmap text-based information, and associating respective tags with portions of the non-bitmap text-based information based on keywords and phrases identified in the portions of the non-bitmap text-based information; and wherein associating the respective tags with the portions of the non-bitmap text-based information includes: comparing the identified keywords and phrases with a predefined dictionary to discover a set of uncommon terms in the non-bitmap text-based information, and attaching at least some of the respective tags to the portions of the non-bitmap text-based information based on the set of uncommon terms discovered in the non-bitmap text-based information.