ViRBO (http://virbo.org/) is one of the domain-specific virtual observatories that began operations in Fall, 2006 and is funded under the NASA Heliophysics Data Environment program. This presentation will cover three topics: (1) the data products available or exposed through ViRBO, (2) our experience in developing a VxO over the past three years, and (3) our perspectives and predictions about the future of the VxO Environment based on this experience. Data available through ViRBO include measurements from the SAMPEX, GOES, POES, LANL GEO, Polar, and GPS satellites. A number of new data sets, not previously openly available, include measurements from the HEO-1, HEO-3, CRRES, SCATHA, OV1-19, OV3-3, ICO, and S3-3 spacecraft along with scientist-contributed model and simulation data. Data are served in a number of ways, including a basic FTP site and an OPeNDAP server. As part of this project, we have developed or extended a number of existing software codebases. These codebases have cross-VxO uses, and we are developing them to be usable by other virtual observatories.