The sluggish economy is showing its effects on charitable donations, which rose just 1 percent last year after inflation, according to Giving USA, the annual tally of American philanthropy.

Americans donated $306.4-billion in 2007, figures released today show, but fund raising is facing more challenges this year, especially as the housing and financial-services industries continue to crumble, fuel and food costs rise, and the stock market’s volatility strains individuals and organizations across the country.

Charities interviewed by The Chronicle report that donors of all types have recently delayed or reduced gifts — or stopped giving altogether

To learn more about how the economy is affecting giving, join us for a live online discussion Tuesday at noon, Eastern time.

Let us know how your charity is faring in fund raising and what solicitation techniques are working best. Click on the comments link below to share your ideas.