According to the Grisoft press release:
GRISOFT, the maker of award-winning AVG Anti-Virus, today announced the acquisition of Ewido Networks, a leading provider of innovative anti-malware solutions. This acquisition expands GRISOFT’s AVG antivirus and firewall offerings to include comprehensive malware protection, and provide its customers with the highest level of security against growing types of malicious software spreading across the Internet.
Both AVG and  ewido are two excellent tools when dealing with viruses and other malware. I wonder if this move was triggered as a result of increased competition from other vendors and especially with companies like Microsoft introducing their own antivirus suites such as Windows Onecare. Either way I hope GRISOFT continues to provide free versions of AVG and ewido.