In doing some research for a potential project, I was exploring what kinds of eAdvocacy options were available to plug in to CiviCRM. Many of the big commercial eAdvocacy tools have big commercial price tags to go with them (and don't integrate directly with CiviCRM besides).
Your nonprofit doesn't have just one fundraising strategy. You have many. Think events, donor letters and appeals, e-newsletter blasts, planned giving, and capital campaigns. Each of these strategies typically targets a specific segment of your community, even if the funds raised impact the same budget line.